To summarize (out of the noisy test log). What happens with this patch applied is that libvirt looses its LXC-guest on the restart of the service.
With the XML from the test this is what happens: $ virsh define debian/tests/smoke-lxc.xml $ virsh start sl $ virsh list Id Name State ------------------------ 2280 sl running $ virsh lxc-enter-namespace --noseclabel sl /bin/ls /bin/ls /bin/ls # At this point we know and have confirmed the guest works # Now restarting libvirtd breaks it. $ systemctl restart libvirtd # Now the guest container is gone Pre restart it looks like: 4 0 2426 1 20 0 138712 16132 poll_s Sl ? 0:00 /usr/lib/libvirt/libvirt_lxc --name sl --console 20 --security=apparmor --handshake 23 4 0 2428 2426 20 0 4084 3216 poll_s Ss+ pts/0 0:00 \_ /bin/bash The guest log in /var/log/libvirt/lxc/sl.log gets this entry in !BOTH! cases: 2019-09-23 10:51:46.004+0000: 2426: error : virNetSocketReadWire:1804 : End of file while reading data: Input/output error So this is a common red-herring, the system with systemd 241-7ubuntu1 has the same as well. Another red-herring is the libvirtd service on restart reporting the LXC processes as left-over. This also happens with old and new systemd: Sep 23 12:51:46 autopkgtest systemd[1]: libvirtd.service: Found left-over process 2428 (bash) in control group while starting unit. Ignoring. Sep 23 12:51:46 autopkgtest systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies. Sep 23 12:51:46 autopkgtest systemd[1]: libvirtd.service: Found left-over process 2426 (libvirt_lxc) in control group while starting unit. Ignoring. Sep 23 12:51:46 autopkgtest systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies. The error that is different between 241 and 243 is from the libvirtd daemon: Sep 23 12:51:46 autopkgtest libvirtd[2448]: internal error: No valid cgroup for machine sl Sep 23 12:51:46 autopkgtest libvirtd[2448]: End of file while reading data: Input/output error This is not just a visibility problem, the process that was the guest really is gone at this point. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1844879 Title: Behaviour change in systemd 243 breaks libvirt autopkgtest To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1844879/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
